PEKISTERIA. 511 



somewhat obovate in outline, with a blackish purple claw 

 widening into an oblong-obovate cream-coloured disk, from 

 which a pair of bluntly linear incurved chocolate brown side 

 lobes proceed ; it then becomes constricted, the front lobe 

 furnished with two laterally spreading acute recurved blackish 

 purple falcate teeth, and terminating in a roundish knob, 

 covered with a bunch of shaggy cream-coloured glandular 

 hairs. The column is green spotted with purple and tipped 

 with bright yellow. A fiue flower of this species was com- 

 municated by W. WilHams, Esij., Sugnell Hall, Eccleshall, 

 Staffordshire. It flowers in October and November. — Brazil. 



Fig. — Orchid Album, iv, t. Ho. 



P. rugosa, Rchb. f. — A pretty little free-flowering species. 

 The pseudobulbs are very small, nearly terete, furrowed, the 

 leaves cuneate below and much acuminate, and the scapes 

 pendulous bearing two flowers as large as those of P. cristata. 

 The sepals and petals are white or creamy yellow, distinctly 

 spotted with dull purple ; the lip reddish purple with a white 

 fringe. It flowers during the summer months. This variety 

 Reichenbach suggests should be called Sanderiaiia, and the 

 other New Grenadan variety, which has the sepals and petals 

 yellowish with few brown spots, and the lip white spotted with 

 purple, should be regarded as the type of the species. — New 

 Grenada. 

 Syn. — P. Sanderiana. 



P. tigrina. — See Houlletia tigeina. 

 P. Sanderiana. — See Paphinia rugosa. 



PeeISTEEIA, Hooker. 

 {Tribe Vandese, subtribe Stanhopieae.) 

 A genus of remarkable species, one of which, P. elata, the 

 Dove plant, is a noble object, and one which ought to be in 

 every collection. These plants produce their flower scapes 

 from the side of their large pseudobulbs, near the base, and 

 have broad plicately venose leaves contracted into a petiole 

 below. The flowers are showy, with thick broad sepals 

 connivent into a globular form, a three-lobed lip with the 

 lateral lobes erect and the middle lobe concave and inflexed, 



